1. Takes place in presence of Oxygen.2. End products- Carbon dioxide & Water3. More energy is released.

4. Takes place in Cytoplasm & Mitochondria

5. Complete oxidation of glucose takes place.

6. It occurs in most organisms.

7. Equation-

Glucose→ Pyruvate→ CO2 + H2O + Energy

1. Takes place in absence of Oxygen.2. End products- Ethanol & Carbon dioxide3. Less energy is released.

4. Takes place in only in Cytoplasm.

5. Incomplete oxidation of glucose takes place.

6. It occurs in certain bacteria, yeast & certain tissues of higher organisms. E.g. In humans during vigorous exercise, when the demand for Oxygen is more than the supply, muscle cells respire anaerobically for some time.

Draw a diagram of cross section of human heart. Show the path of flow of blood with the help of arrows.

How water is transported upwards in plants?

Descried the functioning of nephrons.

Draw a diagram of human alimentary canal.

Label the following – oesophagus, liver, gall bladder, and duodenum.

What is the function of liver in human body?

HOTS QUESTIONS (SOLVED / UNSOLVED)

Q1. Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds?

Ans. The mammals and birds are warm-blooded animals which have high energy needs because they constantly require energy to maintain their body temperature. It is necessary to separate oxygenated blood and deoxygenated blood in mammals and birds because such a separation allows a highly efficient supply of oxygen to the body cells which is required for producing a lot of energy needed by them.

Q2. How is small intestine designed to absorb digested food?

Ans. The inner surface of small intestine has millions of tiny, finger like projections called Villi. The presence of villi gives the inner walls of the small intestine a very large surface area. The large inner surface area of small intestine helps in the rapid absorption of the digested food.

LIFE PROCESSES

ORAL QUESTIONS

1

Do plants also need oxygen?

2

How does food passes through alimentary canal?

3

What regulate the exit of food from the stomach into small intestine?

4

In which part of the alimentary canal food is completely digested absorbed?

5

In which cell organelle breakdown of pyruvate takes place using oxygen?

6

Which structures stop backward flow of blood in atria and ventricles?

7

The filtered urine is collected in which part of nephron?

8

Which part of the plant excretes some waste substances into the soil?

9

Name the process used to remove urea from the blood.

10

The process by which evaporation of water from the plants mainly through the stomata.

QUIZ

1

Digestion of starch in humans takes from which organ?

2

Absorption of energy takes place in sunlight by the pigment.

3

Is chloroplast is non – lining structure?

4

What is the function of amylase?

5

Name the organ responsible for respiration in fish.

6

Which is more harmful urea or ammonia?

7

Which contains less nitrogenous wastes, the renal vein or renal artery?